Means for the pasteurization of milk



Oct. 2, 192 I 1,686,227

- E. P. DAVIS El AL MEANS FOR THE PASTEURIZATION 0F MILK Filed Feb. 21, 1927 -;U,Nrrso starts 7 may be readily assembled andseparated a'ndq which is simpleand adapted to'be'easily and.

Patented Get. 2, 1928.

'ERBY i. DAVIS; JAMnso. 'aoss, AND MARTIN a, same, onnnw ol-is'rnn' HUN RED, rnLAwAnE; I

MEAus FOR THE PASTEUBIZVATION or "MILK;-

- Application filed February 21, 1927;.

. This invention provides for the treatment. of lacteal and other fluids whereby'todestroy. fermenting. and noxious germs to prevent rapid deterioration and to make thesame suitable for feed. I I

The invention supplies an apparatus which effectively operated, both; for-heatingthe milk to. kill i any ferment and. immediately cooling the'milk to -prolong its period of an'enclosed separating space to receive Water to be heated and utilized for raising the tem- 'Whilethe'drawings illustrate a preferred =-in,q the invention;

view of the pasteuri-j sweetness, both operations being effected in a sin le closed cycles A Y The invention contemplates apparatus em?" bodying inner and outer receptacles having peratnreofnthe contentsof the inner receptacle to 'a degree to effect pasteurization thereof, means being provided to circulate the hot waterthrough-andabout the inner rec'ep tacl-e, whereby to cfiect a-rapid and thorough.

heating of the contents-of the inner: receptacle without overheating, thereby prescrving'the natural flavor and qualities of milk. 1

embodiment of the invention, it is to be understood that in adapting the. means to meet specific needs and requirements, the

design may be'varied and such other changes in the minor details of construction may be resorted to-withinthe scope of the inventionas claimed, without departing-from the spirit thereof. I 1

For a'full understanding of the invention. and the: merits thereof; reference 1s to be had -to-the following description and the drawings hereto-attached,- in which,' I

Figurelis an elevational view, partly'in "upper endof the p'ipe l4 and shortp ipes '16 are'connectedthereto a depen through the sides o-f the'receptacle 2fadjacent to the top;

' thereof. "The branch 'pipesfI5- incline up wardly andoutwardly'andthepipes 16 ear-vet section, of apasteurizing apparatus embody- Figure 2 is atop plan zerx;

Corresponding and like parts-are referred to in thefollowi ng'description and desig-"- natedi in both views of the drawings by like V -the space 3where"'itmingles-withthe"upperfl Thepasteuriz er embodies-an outer recep tacle 1 and an inner receptacle 2, the latter reference characters. '2

being of smaller proportions and centrally disposed to provide a space 3 between the two receptacles.

5, to provide a seat for the outwardly disposed 'vid-ed'todraw the parts=5 anddtoigether to L for the admission of'air into the combustion? chamber whiclris formedby the'bottom of the outer receptacle. The walls of thezbase Serial no; 169,918.

clamp'the washer 7 therebetween. The space 3 15 closed at its upper end by theinwardly dlsposed flanged." 'A'cove'r 9 closes the inner receptacle 2 'and is provided with a centrally disposed handlean'd an opening 10; the latter providingior the insertion of a thermometer 1 todeterminethe temperature. Bracketsll centralizing the inner receptacle 2.

The outer receptaclelis mounted on-a cirtacle-l assist materially in supporting and projecting inwardly'from'theouter' recep cularbase -27; preterablymf 'ca'stiiron, the 1 walls of which contain four spaced holes 28:

incline inwardly at'theto'p' aud'engage the "peripheral portion ofthe outerreceptaclel" to which'it is bolted and otherwise attachedby'ineans offour lugs '29'spac'ed and projectingb'elow the receptacle. The bottom*of the outer r receptacle is preferably" fiat, whereas 1 the bottom of the inner receptacle-2 is pre fera loly round-and formed'centrally with an opening inwhich is fitted'a short 'pi'pen80' threaded at both ends and-projecting both inside andoutside of such receptacle. TheY threaded nozzle ofa'iiunnel 13 may optionally' befitted' to the outside or' lower end-of the l" pipe 30. A; vertically disposed pipe 5 '14; is

located centrallywithin the receptacle 2and outwardly? and then downwardly to discharge is coupled at its'lowe'r end to the'upwardly projecting end of the p'ipe iiO. Oppositely disposedbranohes 15fare pr0v'ided atx'the the cooling water'i'nto the upper'portion of water thereoff I Return pipes'fl Y are d'i'sposed atopposite The lower sides jotthe outer recepta'cle endsfo-f the pipesI'Z connect withth'e lower 1 of the return pipes 16 extends upwardly above its connection with the upper portion of the receptacle 1 and is fitted with a cap 31, such extension being for the purpose of filling the space 3 with water. Adrain cock 32. is fitted to the lower end of the return pipes 16 and provides for drawing off the 7 2 Acooler 23 isassociated with the pasteurizer as an adjunct thereof to receive the milk or other fluid and cool the same. The cooler 23 includes a vessel to receive the refrigerating medium and a coil 24. The faucet 21 has a tight connection with the upper end of the coil -24,and the lower-V discharge end of the coil is provided with a faucet-E which is adapted to make a close connection with the container 26 or other part to receive the fluid and thereby exclude the air; A suitableeclo sure 27 such as a rubber cap, is applied to the nozzle of the faucet 25 to insure an air tight connection thereof with the part desi ned to receive thecooled pasteurized fluid.'

valve 19 applied to the part 4 closing the top of. the space 3jis of the type to relieve dangerous pressure caused by steam accumulating in thetop portion of the space 3. i V

In the operation of the apparatus, the milk to be pasteurized is supplied to the inner receptacle 2, and the space 3 between the two receptacles, together with the respective pipes and tubes is filled with water. The tip aratus isplaced upon a stove, or heat applied to the bottom of the outer receptacle 1, in any preferred way and the water becoming heated at the, bottom passes upwardly through the space 3 between the two receptacles and in the same way through the pipe 14 which discharges the denser and cooler water into the space 3 where it mingles with the cooler water in the space 3 and is forced into return pipes 17 where it passes to the bottoms of the return pipes and enters into the space 3 at the bottom part thereof through the opening therein provided for reheating,'thus providing, after the elimination of the air cushion which may form in the unoccupied space at the top of the space 3, by means of the relief valve 19 dis- 7 around the sides and through the center ofg in contact'with the outside air and in condiposed at thehighest-point in the covering of the space 3, thus providing for a continuous circulation of hot water of even temperature the receptacle 2 -whic-h contains the milk or other fluid to be pasteurized. After the proc esshas been completed, the heated fluid is .drawnofl through the pipe 20 into the cooler 23, thence into the vessel 26 without coming tion for use. The-numeral 33' designates a gauge d sposed on the front part of the apparatus and near the top thereof for the purpose of indicating the level of the water in the space 3 and the respective tubes and pipes.

Having thus described the invention, we claim: g

1. A pasteurizing appliance comprising an outer receptacle having an inwardly disposed flange at its upper end, an inner receptacle spaced fromthe outer receptacle and having an outer flange at its upper end'engaging the inner flange ofthe outer receptacle, the combined flanges closing the space formed between the two receptacles, a pipe within the inner receptacle and opening through the bottom thereof and branched at its upper end, said branches inclining upwardly and outwardly and opening through the. sides of the inner receptacle, and a return pipe exterior to the outer receptacle and forming connecting means between the upper and lower por tions of the space provided betweenthe two receptacles, said appliance being provided with an air escape. valve in the top covering the space.

2. A hot waterpasteurizing appliance com prising spaced inner and outer receptacles having the intervening space closed at its upper end, the inner receptacle having an opening in its bottom and a short pipe threaded at both ends fitted into the opening formed in the bottom of the inner receptacle and projecting a short distance downwardly, to which may be attached the nozzle of an in versely disposed funnel, and also projecting for a short distance upwardly, towhich a pi e may be coupled extending upwardly with branches leading from the. upper end of the pipe through the sides of the inner receptacle and return pipes on opposite sides of the outer receptacle and in communication 'with the upper and lower portions of the closing the space formed therebetween, a cover closing the inner receptacle, a pipe ms.

posed centrally within the inner receptacle and opening through the bottom thereof into the space formed between the two receptacles,

upwardly and laterally deflected branch pipes connecting the upper end of the'central'ly disposed pipe with the sides of the inner re .ceptacle and communicating with the space between the receptacles, and return-pipes exterior to the outer receptacle and in commu-e Lnication with the upper and. lower portions oflt-he space formed between thetwo receptacles.

' In testimonywhereof we aifix' our signaltures. 1 v

'- ERBY PVDAVISL [1). s-.] v JAMES'G. ROSS. :[nsi] MARTIN E. SMITH. [e811 

